$ErrorActionPreference = 'Stop'
$root = Split-Path -Parent $PSScriptRoot
Set-Location -LiteralPath $root

# Robust browser opener — tries several Windows methods until one works.
function Open-Browser($url) {
    $opened = $false
    # Method 1: Start-Process with the URL (default protocol handler)
    try { Start-Process -FilePath $url; $opened = $true } catch {}
    if (-not $opened) {
        # Method 2: explorer.exe with the URL (opens default browser)
        try { & explorer.exe $url; $opened = $true } catch {}
    }
    if (-not $opened) {
        # Method 3: cmd `start` builtin
        try { & cmd.exe /c start "" $url; $opened = $true } catch {}
    }
    if ($opened) { Write-Host "  [ok] abriendo navegador -> $url" -ForegroundColor DarkGray }
    else { Write-Host "  [warn] no se pudo abrir el navegador. Abre manualmente: $url" -ForegroundColor Yellow }
    return $opened
}

Write-Host ""
Write-Host "  [yt-scraper] iniciando servidor local..." -ForegroundColor Cyan

if (-not (Test-Path '.run')) { New-Item -ItemType Directory -Path '.run' | Out-Null }

# Already running?
if (Test-Path '.run\server.info') {
    $firstLine = (Get-Content '.run\server.info' -TotalCount 1)
    $existingPort = ($firstLine -split '\s+')[0]
    try {
        $r = Invoke-WebRequest -Uri "http://localhost:$existingPort/healthz" -UseBasicParsing -TimeoutSec 2
        if ($r.Content -match 'ok') {
            Write-Host "  [ok] servidor ya activo en el puerto $existingPort" -ForegroundColor Green
            Open-Browser "http://127.0.0.1:$existingPort"
            exit 0
        }
    } catch {}
}

# Collect candidate free ports scanning from 8000.
$candidates = @()
foreach ($p in 8000..8100) {
    try {
        $listener = [System.Net.Sockets.TcpListener]::new([System.Net.IPAddress]::Loopback, $p)
        $listener.Start(); $listener.Stop()
        $candidates += $p
        if ($candidates.Count -ge 8) { break }
    } catch {}
}
if ($candidates.Count -eq 0) {
    Write-Host "  [error] no se encontro ningun puerto libre (8000-8100)" -ForegroundColor Red
    exit 2
}

# Launch uvicorn DETACHED in its own persistent minimized console window, logging to .run/server.log.
# The `cmd /c` window is an independent console: it survives this launcher exiting.
$launched = $false
$proc = $null
$port = 0
foreach ($candidate in $candidates) {
    # clear previous log
    Remove-Item '.run\server.log' -Force -ErrorAction SilentlyContinue
    $cmdLine = '/c python -m uvicorn yt_scraper.webapp.app:app --host 127.0.0.1 --port ' + $candidate + ' --log-level info > .run\server.log 2>&1'
    $proc = Start-Process -FilePath 'cmd.exe' -ArgumentList $cmdLine -WorkingDirectory $root -WindowStyle Minimized -PassThru
    Set-Content -Path '.run\server.info' -Value "$candidate $($proc.Id) $(Get-Date -Format o)" -Encoding ASCII

    $ok = $false
    for ($i = 0; $i -lt 40; $i++) {
        Start-Sleep -Milliseconds 500
        try {
            $r = Invoke-WebRequest -Uri "http://localhost:$candidate/healthz" -UseBasicParsing -TimeoutSec 2
            if ($r.Content -match 'ok') { $ok = $true; break }
        } catch {}
    }
    if ($ok) { $port = $candidate; $launched = $true; break }

    # failed on this port — show why from the log, then try the next candidate
    Stop-Process -Id $proc.Id -Force -ErrorAction SilentlyContinue
    Remove-Item '.run\server.info' -Force -ErrorAction SilentlyContinue
}

if (-not $launched) {
    Write-Host "  [error] no se pudo iniciar el servidor." -ForegroundColor Red
    if (Test-Path '.run\server.log') {
        Write-Host "  --- ultimo log del servidor ---" -ForegroundColor Yellow
        Get-Content '.run\server.log' -Tail 25 | ForEach-Object { Write-Host "    $_" }
    } else {
        Write-Host "  instala dependencias:  pip install -e `".[web]`"" -ForegroundColor Yellow
    }
    exit 3
}

Open-Browser "http://127.0.0.1:$port"
Write-Host ""
Write-Host "  [ok] servidor activo" -ForegroundColor Green
Write-Host "    URL:   http://localhost:$port"
Write-Host "    PID:   $($proc.Id)  (ventana minimizada 'cmd' independiente)"
Write-Host "    log:   .run\server.log"
Write-Host "    stop:  stop-server.bat"
Write-Host ""